Go to: https://www.thephysicsaviary.com/Physics/Programs/Labs/ThompsonetomLab/

AutoSave OFF w- Lab 9 Charge to Mass Ratio - Saved to my Mac Q Home Insert Draw Design Layout References Mailings Review View ? Tell me Share Comments Calibri (Bo... v 12 A" A Aa Ap 2 4 9 AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Paste BI Uvab x X A DAY Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane Procedure Go to https://www.thephysicsaviary.com/Physics/Programs/Labs/ThompsonetomLab/ 1. Record the length L and plate separation d of the deflecting capacitor in the Data Sheet. 2. When the device powers up, a beam comes out of the cathode of the accelerating capacitor. This beam then passes through a small opening to give a nice focused beam. When the beam hits the far end of the glass tube, a glowing dot shows where the beam hit. 3. A deflecting capacitor and an electromagnet are used to create electric and magnetic side the vacuum tube. Click on the word "Deflecting Voltage" to set it to zero. Click on the word "Magnetic Field" to set it to zero. Where does the beam hit when both fields have been removed? 4. Increase the deflecting voltage V until the projectile just hits the very end of the top plate of the deflecting capacitor Leave the voltage V at this value for the rest of this lab. Record in the Data Sheet. 5. Use the deflecting voltage V and the plate separation d of the deflecting capacitor to find the electric field between the plates of this capacitor. Show your work. Record in the Data Sheet 6. Now increase the magnetic field strength B to straighten the beam of particles. Try to get the beam as horizontal as possible Record the value of the magnetic field strength B in the Data Table 2 Page 2 of 4 811 words X English (United States) Focus E + 98%Autosave Home Draw Insert Design Layout References Mailings [an v [X Calibri(Bo... v 12 v AA AV Aav A) '3 2 6 BIgvabxzx 10. 11. 12. 13. 14. 15. Review @Labgc ge to Mass Ratio View Q Tell me l'li AaBchDdEe Normal No Spacing Heading1 Since the electric force caused by the capacitor deects the particles upward, the magnetic force must be pushing downward to straighten out this beam. Draw a free body diagram for a particle with these two forces clearly labeled. Include in the lab report. Is the particle positive or negative? Explain. Using (Eq. 1) and (Eq. 2), derive the formula for calculating the speed of the particle 17 = 5/5. Show all steps. Calculate the speed I: of the particle and record in the Data Table. This is the horizontal speed of the particles. Show your work. Turn off the magnetic eld again. Use the horizontal speed 17 you calculated in step 9 and the kinematics equation for horizontal motion of a projectile to find the time t it took the particles to move through the deection capacitor. Record in the Data Table. Show your work. Use the time I you found in step 10 and the kinematics equation (2) for the vertical motion of a projectile, to nd the acceleration a of the particles. Record in the Data Table. Show your work. To derive a formula for q/m: plug the acceleration you found in step 11 into Newton's 2nd law. Use only the electric force as the net force. There is no magnetic force at this time. Vou should have two variables in your equation. They are the mass of the particles that make up this beam and the charge of the particles that make up this beam. Rearrange the equation so that you solve for q/m. Show all steps. Calculate the ratio q/m. Record in the Data Table. Perform 3 trials. Find the average ratio q/m from the three trials. Calculate the percent error. You need to show work lust for the first trial. AaEchDdEe AaBbCCD( AaBchDdEt AaBb( AaBchDdEt > q 13 Share I V Dictate G Comments F . Sensitivity Heading 2 Title Subtitle Styles Pane Page 3 of 4 311 words [IX English (United States) 93% AutoSave OFF w- Lab 9 Charge to Mass Ratio - Saved to my Mac Q Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Calibri (Bo... v 12 A" A Aa Ap 2 4 T AaBbCcDdEe AaBbCcDdEe AaBbCcDc AaBbCcDdE AaBb( AaBbCCDdEE Paste BI Uvab X x A LA Norma No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane Data Sheet: Charge to Mass Ratio length of deflecting capacitor, L = cm = m plate separation of deflecting capacitor, d = cm = m (V) E(V/m) B (T) (s/w) a ts a (m/sz) q/m (C/kg) E = V/d V = E/B t = L/v a = d/t2 q/m = a/E (q/m)average Percent error: (show work) Page 4 of 4 811 words English (United States) Focus E + 98%